| Keywords |
Jungnyeong tunnel ; Suri tunnel ; Expressway tunnel ; Indoor air quality ; Nitrogen oxide |
| Abstract |
The study inspected air in expressway tunnels to verify contaminants and to collect data of ventilation ON: The subject was Suri Tunnel (in direction of Ilsan) in Gunpo Gyeonggi-do and Jungnyeong Tunnel (in direction of Chuncheon) at Danyang Chungbuk. Suri Tunnel (in the direction of Ilsan) with length of about 1,866 meters was likely to have plenty of contaminants because of many traffic (100,000 vehicles a day), and Jungnyeong Tunnel (in the direction of Chuncheon) had less traffic (6,000 to 10,000 vehicles a day) to be likely to have high contaminant because of long time contaminants in long tunnel). We were given material with help of Korean Expressway Corporation, and selected samples of tunnel according to daily traffic and length of tunnel. We had testing point at one place of top of check route (utility pipe conduit) about 100 meters inside from exit of the tunnel where remaining contaminants in the tunnel were likely to have high concentration to flow toward exit of the tunnel. Article 42 of law on road structure and facility (ventilation of the tunnel) specified testing and analysis of contaminants in the tunnel to mention carbon monoxide and nitrogen oxide: And, article 5 (keeping of indoor air quality) and article 6 (recommendation of indoor air quality) of law on structure and control of indoor air quality of multi-use facility was applied considering similarity of testing items of tunnel contaminants as well as contaminants of permission. The purpose of the study was to verify contaminants and to inspect daily change of indoor contaminants in the tunnel and to collect data of ventilation system ON and to give information on ventilation system ON and effective tunnel control. |